/* 基础布局 */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f8f9fa;
}
body{
    display: flex;
    min-height: 100vh;
    justify-content: center;
    align-items: center;

}
/* 表单容器 */
.form-signin {
    width: 100%;
    max-width: 400px;
    padding: 30px;
    margin: 0 auto;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 标题样式 */
.form-signin h1 {
    margin: 0 0 25px;
    color: #333;
    font-size: 24px;
    font-weight: 500;
}

/* 输入框组 */
.am-input-group {
    margin-bottom: 15px;
    position: relative;
}

.am-input-group .form-control {
    width: 100%;
    height: 45px;
    padding: 12px 15px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
    transition: all 0.3s;
}

.am-input-group .form-control:focus {
    border-color: #4dabf7;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
    outline: none;
}

/* 输入框图标 */
.log-icon {
    background-color: #f5f5f5;
    color: #555;
    border: 1px solid #ddd;
}

/* 提示文字 */
.hint {
    display: block;
    color: #777;
    font-size: 12px;
    margin-top: -10px;
    margin-bottom: 15px;
    text-align: left;
    padding-left: 15px;
}

/* 蓝色调注册按钮 */
.am-btn-primary {
    width: 100%;
    padding: 12px;
    background-color: #1890ff;
    border: none;
    border-radius: 5px;
    color: white;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.am-btn-primary:hover {
    background-color: #40a9ff;
    box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
}

.am-btn-primary:active {
    background-color: #096dd9;
}

/* 底部区域 */
.footer-container {
    margin-top: 30px;
    text-align: center;
}

.text-muted {
    color: #777;
    font-size: 14px;
    margin-bottom: 15px;
}
.checkbox input[type="checkbox"] {
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-right: 5px;
}
/* 并排语言切换按钮 */
.language-switcher {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.btn-sm {
    padding: 6px 12px;
    background-color: transparent;
    border: 1px solid #ddd;
    color: #555;
    border-radius: 4px;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-sm:hover {
    background-color: #f5f5f5;
    border-color: #ccc;
}

/* 动画效果 */
.am-animation-slide-left {
    animation: slideLeft 0.5s ease-out;
}

.log-animation-delay {
    animation-delay: 0.2s;
}

.log-animation-delay-a {
    animation-delay: 0.3s;
}

.log-animation-delay-b {
    animation-delay: 0.5s;
}

.am-animation-slide-bottom {
    animation: slideBottom 0.5s ease-out;
}

@keyframes slideLeft {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideBottom {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* 响应式设计 */
@media (max-width: 576px) {
    .form-signin {
        padding: 25px 15px;
        box-shadow: none;
        border: 1px solid #eee;
    }

    body {
        padding: 15px;
        background-color: #fff;
    }

    .am-input-group .form-control {
        padding: 10px 12px;
    }
}
/* 错误提示样式 */
.alert.alert-danger {
    color: red;
}